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首页> 外文会议>International conference on sustainable irrigation and drainage: Management, technologies and policies >Rain harvesting and stream storage for supplementary irrigation to rain-fed paddy schemes: a case study of Selapon Paddy Scheme
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Rain harvesting and stream storage for supplementary irrigation to rain-fed paddy schemes: a case study of Selapon Paddy Scheme

机译：雨喂养稻田方案补充灌溉的雨水收获和流储存 - 以Selapon稻谷方案为例

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Brunei Darussalam is a fairly hilly country in the equatorial Borneo Island of Asia; it is green and rugged, having hot and humid weather with valleys and meadows suitable for paddy cultivation. The country enjoys moderate seasonal rainfall roughly in the months of September to December, ideal for rain-fed paddy cultivation. A crash program of "Grow More Food" has been undertaken presently to achieve food security by 2020. The Selapon Paddy Scheme (SPS) is a rain-fed paddy project in the district of Temburong in Brunei. Although mere is a perennial stream, named Sg. Apoi, flowing adjacent to the scheme area, it suffers from lack of water during a drought situation in between two rainfall events. Heavy flash flow generated in the hilly catchment flows down the stream untapped and gets lost in the sea while a nearby paddy scheme suffers from lack of irrigation water. This scenario needs to be reversed to make the best use of rainwater stream flow, a scarce resource, by harvesting and on-stream storage. SPS has great potential to be converted into a fully irrigated paddy project by providing supplementary irrigation. This paper focuses on a study of the SPS at pre-feasibility level, and investigates the possibility of harvesting the flash flow for the abstraction and diversion for supplementary irrigation by gravity or pump, or a combination of both. Findings suggest that a pump station could be the best alternative of water abstraction from the stream and intermittent storage in a service reservoir wherefrom irrigation mains and drainage network would provide supplementary irrigation to the field by gravity. If the drought situation worsens, a stand-by option would be kept for sub-irrigation by controlled drainage using the irrigation and drainage network for channel retention and structural control of ground water table in the scheme area. This option will save the crop development from wilting during periods of extreme drought.
机译：文莱达鲁萨兰罕是亚洲赤道婆罗洲岛上的一个相当丘陵的国家;它是绿色和坚固的，具有炎热和潮湿的天气，谷和草地适合适合稻草栽培。该国享有较为温和的季节性降雨，大致在9月至12月，非常适合雨水稻草种植。目前，在2020年，目前正在为粮食安全进行“生长更多食物”的崩溃计划.Selapon Paddy Scheme（SPS）是文莱Temburong区的雨水稻草项目。虽然仅仅是一个多年生的流，名叫SG。 Apoi，与方案区域相邻的流动，它在两个降雨事件之间的干旱情况下缺乏水。在丘陵集水区内产生的重闪存流下来流失，在海上迷失在海中，而附近的稻谷方案缺乏灌溉水。这种情况需要逆转，以充分利用雨水流流，稀缺资源，通过收获和储存储存。通过提供补充灌溉，SPS具有很大的潜力将转换为完全灌溉的水稻项目。本文重点介绍了SPS在可行性水平下的SPS的研究，并调查收获抽象的闪存的可能性，用于通过重力或泵的补充灌溉，或两者的组合。调查结果表明，泵站可以是从灌溉电池和排水网络中的流水库中的流和间歇储存的最佳替代方案，从而通过重力为场提供补充灌溉。如果干旱情况恶化，则使用灌溉和排水网络进行控制排水，以便在方案区域中接地水位的沟渠保留和结构控制的灌溉和排水网络保持待机选择。此选项将在极端干旱期间将作物发展省力。

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